This research take the branches and roots of the grapevine rootstock's annual cutting seedling as material. They were treated 4h through the different low temperature. We determined soluble sugar content、proline content、soluble protein content and MDA content of the grapevine rootstocks’branches and roots, and unified the Logistic equation through the electrolyte leaching rate to calculate 8 grapevine rootstocks varieties half lethal temperature. Tried varieties include SO4,225Ru,3309C,5BB,Ripari...